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Magnetic Relaxation in Iron Phthalocyanine Thin Films

Magnetic Relaxation in Iron Phthalocyanine Thin Films

by Ekstrand, Paul D
No customer reviews yet ISBN 9781532898341

Magnetism in thin films is a rich field. Ernst Ising solved the one-dimensional infinite magnetic chain theoretically. Even though he found no ferromagnetic to paramagnetic phase transition in 1D, this model became a paradigm system with tremendous educational value and various important applications. Yet, few experimental realizations were available until 2001, when single chain magnets were being investigated. Here, we present a system where the average chain length is tunable from 40 nm to 110 nm in iron phthalocyanine thin films. We study the temporal remnance curves. Collapsing temperature-dependent remnance measurements into a master curve is equivalent to year-long measurements of the remnance. The relaxation times follow an Arrhenius behavior and have a constant energy barrier of 95K. The single spin relaxation time strongly increases with chain length. This low-dimensional magnetic system is explained in detail.

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Pub dateDec 18, 2015
ISBN-101532898347
ISBN-139781532898341
LanguageEnglish
Last updated 2026-05-17 05:25
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